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[v3,for-next,19/33] RDMA/ocrdma: changes to support user AH creation

Message ID acc18114-8bd6-4f1e-86a8-5c5856fd4686@CMEXHTCAS2.ad.emulex.com (mailing list archive)
State Rejected
Headers show

Commit Message

Somnath Kotur March 25, 2015, 9:20 p.m. UTC 
From: Devesh Sharma <devesh.sharma@emulex.com>

To support user space AH this uses ahid field to convey
l3-type to user space library. The library is responsible
for decoding the l3-type out of ahid.

Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
---
 drivers/infiniband/hw/ocrdma/ocrdma_ah.c | 5 +++++
 drivers/infiniband/hw/ocrdma/ocrdma_ah.h | 5 +++--
 2 files changed, 8 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
index 1bb72a0..65a39cc 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
@@ -191,6 +191,11 @@  struct ib_ah *ocrdma_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
 		ahid_addr = pd->uctx->ah_tbl.va + attr->dlid;
 		*ahid_addr = 0;
 		*ahid_addr |= ah->id & OCRDMA_AH_ID_MASK;
+		if (ocrdma_is_rocev2_supported(dev)) {
+			*ahid_addr |= ((u32)ah->hdr_type &
+				       OCRDMA_AH_L3_TYPE_MASK) <<
+				       OCRDMA_AH_L3_TYPE_SHIFT;
+		}
 		if (isvlan)
 			*ahid_addr |= (OCRDMA_AH_VLAN_VALID_MASK <<
 				       OCRDMA_AH_VLAN_VALID_SHIFT);
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.h b/drivers/infiniband/hw/ocrdma/ocrdma_ah.h
index 726a87c..ed45ecd 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_ah.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.h
@@ -31,9 +31,10 @@ 
 enum {
 	OCRDMA_AH_ID_MASK		= 0x3FF,
 	OCRDMA_AH_VLAN_VALID_MASK	= 0x01,
-	OCRDMA_AH_VLAN_VALID_SHIFT	= 0x1F
+	OCRDMA_AH_VLAN_VALID_SHIFT	= 0x1F,
+	OCRDMA_AH_L3_TYPE_MASK		= 0x03,
+	OCRDMA_AH_L3_TYPE_SHIFT		= 0x1D /* 29 bits */
 };
-
 struct ib_ah *ocrdma_create_ah(struct ib_pd *, struct ib_ah_attr *);
 int ocrdma_destroy_ah(struct ib_ah *);
 int ocrdma_query_ah(struct ib_ah *, struct ib_ah_attr *);